Envelop



STATES PATENT ENVELOP.

Specification of Letters Patent 1\To.v 15,185, dated June 24, 1856.

T 0 all whom t may concern Be it known that I, ROBERT T. KNIGHT, of Philadelphia, in the county of Philadelphia, in the State of Pennsylvania, have invented a new and Improved Mode of Construct-ing Envelope for the Reception of Metal Clasps or Eyelets when so Secured; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of my invention consists in making the ends of the envelop a, w Ivigure l, long enough to lap over each other as at b, Z), E ig. 2, so that the clasp or eyelet may pass through the four sides of the envelops at one time, as at C Fig. 3.

To enable others skilled in the art to make and use my invention, I Will proceed to describe its construction and operation.

The lapping of the ends of envelop b, Z),

Fig. 2, When they are to be secured by metallic eyelets as herein above set forth.

ROBERT T. KN IGHT.

W'itnesses MATTiE S. KNIGHT, RACHEL M. KNIGHT. 

